Attachment for indicating changes in liquid-levels.



A. SGRITTA. ATTACHMENT FOR INDIGATING CHANGES IN LIQUID LEVELS. APPLICATION FILED AUG. 21. 1913. RENEWED JAN.23,1915.

1,1 30,548. 4 Patented Mar. 2, 1915.

IN VEN TOR.

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ALFONSO SGRITTA, 0F BROOKLYN. NEW YORK.

ATTACHMENT FOR INDICATING CHANGES IN LIQUID-LEVELS.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed August 21, 1913, Serial No. 785,962. Renewed January 23, 1915. Serial No. 4,075.

To all whom it may concern Be it known that I, ALroNso SoRrrrl-l, a

citizen of the United States, residing at the level of the tank reaches a predetermined height.

A further object of my invention resides in the particular arrangement and combination of parts hereinafter described.

In the accompanying drawing :Figure 1 is an elevational view, partly in section, showing my improved mechanism applied to a tank. Fig. 2 is a side view of the mechanism shown in Fig. 1 taken from the right of said figure, certain parts being removed.

Figs. 3, 4 and 5 are detail views showing parts of the mechanism on an enlarged scale. Fig. 6 is a perspective view on enlarged scale of the release shown in F ig 1.

' Throughout the separate views the same part is designated by the same reference character.

Referring more particularly to the drawing, 1 is a tank shown as containing a certain amount of liquid and having my improved attachment fixed thereto. This attachment comprises a clamp 2 which embraces the'upper edge of one of the vertical walls of the tank and which is held in place by means of a set screw such as 3.

4 is a horizontal level pivotall connected to the clamp 2 at the point 5.

he lever 4 has one end overhanging-the interior of the tank, while the other end extends outwardly therefrom. Connected to the inner end of the lever 4 is a rod 6 at the lower end of which is secured a float 7. The outer end of the lever 4 is pivotally connected to a link 11 which forms a part of the alarm apparatus. Such apparatus is carried within a frame which comprisestwo' plates such as 8-8 rigidly secured to the exterior portion of the clamp 2 and which are connected by bolts such as 1010. The lower end of link 11 which is of U-shaped formation has its free end resting against a U-shaped plate 12, shown in Figs. 2 and 6. Said plate 12 is bar 13. The free end of plate 14 engages an arm 15 secured to a rock shaft 16, pivotally secured with its ends in plates 8-8. An outwardly extending arm 17 is secured to the shaft 16 and is provided at its front end with a hammer 18 adapted to strike an alarm bell when actuated upon by a clock mechanism. Said alarm bell 19 is supported on one of said side plates 8-8 adjacent said hammer 18. A tappet adjacent its cen ter is fastened to the shaft 20 by means of a pin 21. Said tappet is positioned transversely to the shaft 16, and has its ends 20' and 20" bent at right angles and inwardly into engagement with the teeth 23 of gear wheel 22, thereby preventing rotation of said gear wheel. Now the wheel 22 is fixed to a shaft 23 which also carries a pinion 24 which meshes with a gear wheel 25 fixed to shaft 26. Shaft 26 also carries a pinion 27 which meshes in turn with a gear 28 carried by the shaft 29, but loosely mounted thereon.

28 has pivoted thereto a pawl 31 which is thrown against the teeth of the ratchet wheel 30 by the spring 32, also carried by the wheel 28. Now, a spring 33 is provided which is coiled about the shaft 29, having one end fastened to the shaft and the other end fastened to the lower one of the bolts 10.

Fixed to the shaft 29 alongside of the wheel 28 is a ratchet wheel 30 and the wheel piece 34 for winding the spring 33.

From the foregoing it will be understood that in operation the spring 33 forces the wheel 30 against the pawl 31 so as to turn the wheel 28 in the direction of the lower arrow, but that movement is normally prevented by the engagement of the tappet fingers 20, 20" with the wheel 22. .When, however, the liquid in the tank 1 reaches a certain predetermined level, the float is raised, thereby depressing the outer end of the lever 4 and throwing the ears l2 and 14 in a counter clockwise direction when viewed as in Figs. 2 and 6. As clearly shown in Fig. 3 the movement of the car 14 just mentioned will also permit the shaftl6 to turn in a counter clockwise direction.

that the wheel 22 can revolve slightly. At the same time that the tappet finger 20' is lifted, the tappet finger 20" is thrown down so that as the wheel 22 revolves the tappet finger 20 will be struck by the teeth 23 and the arm 20 and shaft 16 given a rapid vibration. In consequence of said rapid vibration of the shaft 16 the arm 17 and hammer 18 are vibrated and the bell sounded.

Having thus described my invention, what I claim is:

In an alarm apparatus, a pivoted shaft having two U-shaped arms thereon, a float controlled lever for operating said shaft and connected to one of said arms, a second pivoted shaft to which is connected a hammer .and a tappet piece aswell as a third arm vwhich normally makes contact with the second of the arms carried by said first mentioned shaft, and a toothed wheel for cooperating with said tappet piece, said Wheel being normally held from revolution by said tappet piece but being permitted to revolve and being ada ted to actuate said tappet piece and there y oscillate said hammer to said second mentioned shaft when said second mentioned shaft is turned from normal position by said arms on account of the operation of said float controlled lever.

In testimony whereof I afiix my signature in the presence of two witnesses.

ALFONSO SGRITTA.

Witnesses O'rro Busacx, RUDOLPH HANAN. 

